#include "Date.h"

Date::Date(int year,int month,int day)
{
	_year = year;
	_month = month;
	_day = day;
}

void Date::Print()
{
	cout << _year << "-" << _month << "-" << _day << endl;
}

bool Date::operator<(const Date& d)
{
	if (_year < d._year)
	{
		return true;
	}
	else if (_year == d._year
		&& _month < d._month )
	{
		return true;
	}
	else if(_year == d._year
		&& _month == d._month
		&& _day < d._day)
	{
		return true;
	}

	return false;
}

bool Date::operator>(const Date& d)
{
	return !(*this < d) && !(*this == d);
}

bool Date::operator<=(const Date& d)
{
	return *this < d || *this == d;
}

bool Date::operator>=(const Date& d)
{
	return !(*this <= d);
}

bool Date::operator==(const Date& d)
{
	return _year == d._year
		&& _month == d._month
		&& _day == d._day;
}

bool Date::operator!=(const Date& d)
{
	return !(*this == d);
}

Date Date::operator+(int day)
{
	Date tmp = *this;

	//tmp._day += day;
	//while (tmp._day > GetMonthDay(tmp._year, tmp._month))
	//{
	//	tmp._day -= GetMonthDay(tmp._year, tmp._month);
	//	tmp._month++;
	//	if (tmp._month == 13)
	//	{
	//		tmp._year++;
	//		tmp._month = 1;
	//	}
	//}

	tmp += day;
	return tmp;
}

Date& Date::operator+=(int day)
{
	_day += day;
	while (_day > GetMonthDay(_year, _month))
	{
		_day -= GetMonthDay(_year, _month);
		_month++;
		if (_month == 13)
		{
			_year++;
			_month = 1;
		}
	}
	return *this;
}

Date Date::operator-(int day)
{
	Date tmp = *this;
	tmp -= day;
	return tmp;
}

Date& Date::operator-=(int day)
{
	_day -= day;
	while (_day <= 0)
	{
		_month--;
		if (_month == 0)
		{
			_year--;
			_month= 12;
		}
		_day += GetMonthDay(_year, _month);
	}
	return *this;
}

Date& Date::operator++()
{
	*this + 1;
	return *this;
}

Date& Date::operator++(int)
{
	Date tmp = *this;
	*this + 1;
	return tmp;
}

Date& Date::operator--()
{
	*this - 1;
	return *this;
}

Date& Date::operator--(int)
{
	Date tmp = *this;
	*this - 1;
	return tmp;
}